Home / 2,013.86-2,779.08-1,129.64

Finding the Fourth Proportional to 2,013.86, 2,779.08 and 1,129.64

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Solution

The fourth proportional to 2,013.86, 2,779.08 and 1,129.64 is: 1,558.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.86 : 2,779.08 = 1,129.64 : x
  2. Step 2: Convert to fraction form
    2,013.86/2,779.08 = 1,129.64/x
  3. Step 3: Cross multiply
    2,013.86x = 2,779.08 × 1,129.64
  4. Step 4: Simplify right side
    2,013.86x = 3,139,359.93
  5. Step 5: Solve for x
    x = 3,139,359.93/2,013.86
  6. Step 6: Final answer
    x = 1,558.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.